Mr. Clarke: “Picture… an acrobat… standing on a tightrope. Now, the tightrope is our dimension. And our dimension has rules. You can move forwards, or backwards. But, what if… right next to our acrobat, there is a flea? Now, the flea can also travel back and forth, just like the acrobat. Here’s where things get really interesting. The flea can also travel this way… along the side of the rope. He can even go… underneath the rope.”Mike: “But we’re not the flea, we’re the acrobat.”Mr. Clarke: “In this metaphor, yes, we’re the acrobat.”Lucas: “So we can’t go upside down?”Mr. Clarke: “No.”Dustin: “Well, is there any way for the acrobat to get to the Upside Down?”Mr. Clarke: “Well… you’d have to create a massive amount of energy. More than humans are currently capable of creating, mind you, to open up some kind of tear in time and space, and then… you create a doorway.”